3C 273 is a quasar located at the center of a giant elliptical galaxy in the constellation of Virgo. It was the first quasar ever to be identified and...

nature, and this became shortened to "quasar". The first quasars (3C 48 and 3C 273) were discovered in the late 1950s, as radio sources in all-sky radio...

light-years distant. 2.4×109 ly 3C 273, optically the brightest quasar, of apparent magnitude 12.9, just dimmer than R136a1. 3C 273 is about 2.4 billion light-years...

found began with the investigation by Maarten Schmidt of the radio source 3C 273 in 1963. Initially this was thought to be a star, but the spectrum proved...

A major breakthrough was the measurement of the redshift of the quasar 3C 273 by Maarten Schmidt, published in 1963. Schmidt noted that if this object...

Matthews, Thomas A (1964). "Redshift of the Quasi-Stellar Radio Sources 3c 47 and 3c 147". The Astrophysical Journal. 139: 781. Bibcode:1964ApJ...139..781S...

specific observations or some details. Examples of blazars include 3C 454.3, 3C 273, BL Lacertae, PKS 2155-304, Markarian 421, Markarian 501, 4C +71.07...

quasar 3C 9 is cited by Kardashev as early as 1971. The study of the quasar 3C 273 shows that it has a solid structure. Other quasars (3C 279, 3C 345, 3C 84)...

sources 3C 48 and 3C 273, were displaced so far to the red due to their redshifts as to be almost unrecognizable, but Greenstein deciphered 3C 48 shortly...

strong emissions in the radio spectrum. Virgo is also home to the quasar 3C 273 which was the first quasar ever to be identified. With a magnitude of ~12...